package com.hmdp.service.impl;

import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.bean.copier.CopyOptions;
import cn.hutool.core.lang.UUID;
import cn.hutool.core.util.RandomUtil;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.hmdp.dto.LoginFormDTO;
import com.hmdp.dto.Result;
import com.hmdp.dto.UserDTO;
import com.hmdp.entity.User;
import com.hmdp.mapper.UserMapper;
import com.hmdp.service.IUserService;
import com.hmdp.utils.RedisConstants;
import com.hmdp.utils.RegexUtils;
import com.hmdp.utils.SystemConstants;
import lombok.extern.log4j.Log4j;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import javax.servlet.http.HttpSession;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

import static com.hmdp.utils.RedisConstants.*;

/**
 * <p>
 * 服务实现类
 * </p>
 *
 * @author 虎哥
 * @since 2021-12-22
 */
@Service
@Slf4j
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements IUserService {

    @Resource
    private StringRedisTemplate stringRedisTemplate;
    @Qualifier("redisTemplate")
    @Autowired
    private RedisTemplate redisTemplate;

    @Override
    public Result sendCode(String phone, HttpSession session) {
        //校验手机号
        if(RegexUtils.isPhoneInvalid( phone)){
            return Result.fail("手机号格式错误");
        }
        // 符合生成验证码
        String code = RandomUtil.randomNumbers(6);
        // 保存验证码到session
//        session.setAttribute("code",code);
        stringRedisTemplate.opsForValue().set(LOGIN_CODE_KEY+phone,code,LOGIN_CODE_TTL, TimeUnit.MINUTES);
        // 发送验证码
        log.debug("发送验证码成功：{}",code);
        return Result.ok();
    }

    @Override
    public Result login(LoginFormDTO loginForm, HttpSession session) {
        String phone = loginForm.getPhone();
        //校验手机号
        if(RegexUtils.isPhoneInvalid( phone)){
            return Result.fail("手机号格式错误");
        }
        //校验验证码不一致报错
//        Object cachecode = session.getAttribute("code");
        String cachecode = stringRedisTemplate.opsForValue().get(LOGIN_CODE_KEY + phone);
        String code = loginForm.getCode();
        if(RegexUtils.isCodeInvalid(loginForm.getCode())||!cachecode.equals( code)){
            return Result.fail("验证码错误");
        }
        //根据手机号查询用户
        User user = query().eq("phone", loginForm.getPhone()).one();
        //不存在创建 用户保存到数据库
        if(user==null){
          user=CreateUser(loginForm.getPhone());
        }
        //保存到session
//        session.setAttribute("user",user);
        //生成token 不带下划线
        String token = UUID.randomUUID(true).toString();//

        //转换成map
        UserDTO userDTO = BeanUtil.copyProperties(user, UserDTO.class);
//        Map<String, Object> userMap = BeanUtil.beanToMap(userDTO); id不是string类型
        Map<String, Object> userMap = BeanUtil.beanToMap(userDTO, new HashMap<>(), CopyOptions.create().setIgnoreNullValue(true)
                .setFieldValueEditor((fieldName, fieldValue) -> fieldValue.toString()));


        //保存到redis
        stringRedisTemplate.opsForHash().putAll(LOGIN_USER_KEY+token,userMap);
        stringRedisTemplate.expire(LOGIN_USER_KEY+token,LOGIN_USER_TTL,TimeUnit.MINUTES);
        //返回给客户端
        return Result.ok(token);
    }

    private User CreateUser(String phone) {
        User user = new User();
        user.setPhone(phone);
        user.setNickName(SystemConstants.USER_NICK_NAME_PREFIX +RandomUtil.randomString(10));
        save(user);
        return user;
    }
}
